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A034131 Decimal part of cube root of a(n) starts with 5: first term of runs. 2
4, 16, 43, 92, 167, 275, 422, 615, 858, 1158, 1521, 1954, 2461, 3049, 3724, 4493, 5360, 6332, 7415, 8616, 9939, 11391, 12978, 14707, 16582, 18610, 20797, 23150, 25673, 28373, 31256, 34329, 37596, 41064, 44739, 48628, 52735, 57067, 61630 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..38.

FORMULA

a(n) = ceiling((n+1/2)^3) - Benoit Cloitre, Apr 16 2003

(1/8) {8n^3 + 36n^2 + 54n + 31 - (-1)^n - 2(-1)^[(n-1)/2] }. - Ralf Stephan, Jun 10 2005

CROSSREFS

Cf. A034121.

Sequence in context: A188124 A190090 A227012 * A183536 A161142 A212960

Adjacent sequences:  A034128 A034129 A034130 * A034132 A034133 A034134

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Sep 15 1998.

STATUS

approved

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Last modified November 23 00:51 EST 2014. Contains 249836 sequences.