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A079901
Triangle of powers, T(n,k) = n^k, 0 <= k <= n, read by rows.
16
1, 1, 1, 1, 2, 4, 1, 3, 9, 27, 1, 4, 16, 64, 256, 1, 5, 25, 125, 625, 3125, 1, 6, 36, 216, 1296, 7776, 46656, 1, 7, 49, 343, 2401, 16807, 117649, 823543, 1, 8, 64, 512, 4096, 32768, 262144, 2097152, 16777216, 1, 9, 81, 729, 6561, 59049, 531441, 4782969, 43046721
OFFSET
0,5
COMMENTS
Matrix inverse equals the triangle R where R(n,k) = A107045(n,k)/A107046(n,k) are coefficients with exponential-like properties. - Paul D. Hanna, May 22 2005
LINKS
FORMULA
T(n,k) = if k=0 then 1 else T(n,k-1)*n.
T(n,0) = 1; T(n,1) = n for n>0; T(n,2) = A000290(n) for n > 1; T(n,3) = A000578(n) for n > 2; T(n,4) = A000583(n) for n>3.
T(n,n-2) = A000272(n) for n>2; T(n,n-1) = A000169(n) for n>1; T(n,n) = A000312(n).
EXAMPLE
Triangle begins:
1;
1,1;
1,2,4;
1,3,9,27;
1,4,16,64,256;
1,5,25,125,625,3125;
MATHEMATICA
Join[{1}, Flatten[Table[n^k, {n, 9}, {k, 0, n}]]] (* Harvey P. Dale, Feb 08 2013 *)
PROG
(Haskell)
a079901 n k = a079901_tabl !! n !! k
a079901_row n = a079901_tabl !! n
a079901_tabl = zipWith (map . (^)) [0..] a002262_tabl
-- Reinhard Zumkeller, Mar 31 2015
(PARI) row(n) = vector(n+1, k, n^(k-1)); \\ Amiram Eldar, May 09 2025
CROSSREFS
Cf. A107045/A107046 (matrix inverse).
Sequence in context: A100075 A059836 A069270 * A121426 A190183 A004515
KEYWORD
nonn,easy,tabl
AUTHOR
Reinhard Zumkeller, Feb 21 2003
STATUS
approved