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A022785 Place where n-th 1 occurs in A023123. +0
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; listen)
OFFSET

1,2

FORMULA

a(n)=1+sum(k=1,n-1,ceil(r*k)) where r=e [From Benoit Cloitre (benoit784c(AT)orange.fr), Jan 24 2009]

PROGRAM

(PARI) a(n)=1+sum(k=1, n-1, ceil(exp(1)*k)) [From Benoit Cloitre (benoit784c(AT)orange.fr), Jan 24 2009]

CROSSREFS

Sequence in context: A029714 A062198 A050858 this_sequence A057312 A008038 A160425

Adjacent sequences: A022782 A022783 A022784 this_sequence A022786 A022787 A022788

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

page 1

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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