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A023667 Convolution of A001950 with itself. 0
4, 20, 53, 110, 201, 330, 504, 730, 1013, 1364, 1787, 2288, 2880, 3564, 4348, 5240, 6243, 7370, 8624, 10010, 11540, 13214, 15045, 17038, 19196, 21536, 24056, 26764, 29671, 32776, 36095, 39630, 43384, 47378, 51605, 56076, 60801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..37.

CROSSREFS

Sequence in context: A244050 A250224 A250272 * A213485 A296274 A035007

Adjacent sequences:  A023664 A023665 A023666 * A023668 A023669 A023670

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 17 08:36 EDT 2019. Contains 328107 sequences. (Running on oeis4.)