A138037 - OEIS

A138037

a(0) = 0, a(n+1) = n + a(n)/(2 - a(n) mod 2).

0, 1, 3, 6, 7, 12, 12, 13, 21, 30, 25, 36, 30, 28, 28, 29, 45, 62, 49, 68, 54, 48, 46, 46, 47, 72, 62, 58, 57, 86, 73, 104, 84, 75, 109, 144, 108, 91, 129, 168, 124, 103, 145, 188, 138, 114, 103, 150, 123, 172, 136, 119, 171, 224, 166, 138, 125, 182, 149, 208, 164, 143

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OFFSET

0,3

COMMENTS

A138038 and A138039 respectively give record values and where they occur.

LINKS

R. Zumkeller, Table of n, a(n) for n = 0..1000

MAPLE

a[0]:= 0:

for n from 0 to 100 do a[n+1] := n + a[n]/(2 - (a[n] mod 2)) od:

seq(a[n], n=0..101); # Robert Israel, Jan 12 2016

MATHEMATICA