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A138298 First differences of A137976 after having added two leading ones. 0
0, 2, 10, 21, 110, 233, 1220, 2584, 13530, 28657, 150050, 317811, 1664080, 3524578, 18454930, 39088169, 204668310, 433494437, 2269806340, 4807526976, 25172538050, 53316291173, 279167724890, 591286729879, 3096017511840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..24.

FORMULA

a(n)= A137986(n)-A137986(n-1), n>=2.

a(2n)= 2*A102312(n)= 10*A049666(n). a(2n+1)= A134490(n).

CROSSREFS

Sequence in context: A318548 A318210 A080881 * A303294 A302566 A333702

Adjacent sequences:  A138295 A138296 A138297 * A138299 A138300 A138301

KEYWORD

nonn

AUTHOR

Paul Curtz, May 07 2008

EXTENSIONS

Edited and extended by R. J. Mathar, Jul 28 2008

STATUS

approved

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Last modified May 31 02:51 EDT 2020. Contains 334747 sequences. (Running on oeis4.)