A022785 - OEIS

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A022785

Place where n-th 1 occurs in A023123.

1

1, 4, 10, 19, 30, 44, 61, 81, 103, 128, 156, 186, 219, 255, 294, 335, 379, 426, 475, 527, 582, 640, 700, 763, 829, 897, 968, 1042, 1119, 1198, 1280, 1365, 1452, 1542, 1635, 1731, 1829, 1930, 2034, 2141, 2250, 2362, 2477, 2594, 2714, 2837, 2963

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..47.

FORMULA

a(n) = 1 + Sum_{k=1..n-1} ceiling(e*k). - Benoit Cloitre, Jan 24 2009

PROG

(PARI) a(n)=1+sum(k=1, n-1, ceil(exp(1)*k)) \\ Benoit Cloitre, Jan 24 2009

CROSSREFS

Sequence in context: A173248 A267882 A238705 * A241239 A057312 A219965

Adjacent sequences: A022782 A022783 A022784 * A022786 A022787 A022788

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved