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A022796
Place where n-th 1 occurs in A023134.
2
1, 2, 3, 4, 6, 8, 10, 13, 16, 19, 23, 27, 31, 36, 41, 46, 52, 58, 64, 71, 78, 85, 93, 101, 109, 117, 126, 135, 144, 154, 164, 174, 185, 196, 207, 219, 231, 243, 256, 269, 282, 296, 310, 324, 339, 354, 369, 384, 400, 416, 432, 449, 466, 483, 501, 519
OFFSET
1,2
COMMENTS
This is column 1 of the transposable interspersion A283944.
LINKS
FORMULA
a(n) = n + Sum_({k=1..n} floor((n-k)/Pi.
a(n) <= floor(binomial(n, 2)/Pi) + n. - David A. Corneth, Mar 26 2017
MATHEMATICA
Table[n + Sum[Floor[(n - k)/Pi], {k, 1, n}], {n, 1, 100}]
PROG
(PARI) for(n=1, 100, print1(n + sum(k=1, n, floor((n - k)/Pi)), ", ")); \\ Indranil Ghosh, Mar 26 2017
(Python)
import math
from mpmath import *
mp.dps = 100
print([n + sum([int(math.floor((n - k)/pi)) for k in range(1, n + 1)]) for n in range(1, 101)]) # Indranil Ghosh, May 28 2019
CROSSREFS
Sequence in context: A280706 A025695 A025694 * A008748 A089649 A049700
KEYWORD
nonn
EXTENSIONS
Updated by Clark Kimberling, Mar 27 2017
Offset changed to 1 by Sean A. Irvine, May 21 2019
STATUS
approved