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A065226 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the decagonal numbers. The final elements of the rows form a(n). 2
1, 2, 5, 9, 4, 10, 17, 25, 7, 17, 28, 40, 1, 15, 30, 46, 63, 81, 15, 35, 56, 78, 101, 125, 24, 50, 77, 105, 134, 164, 20, 52, 85, 119, 154, 190, 227, 33, 72, 112, 153, 195, 238, 282, 30, 76, 123, 171, 220, 270, 321, 3, 56, 110, 165, 221, 278, 336, 395, 4, 65, 127, 190 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..62.

CROSSREFS

Cf. A064766, A064865, A065221-A065225, A065227-A065234.

Sequence in context: A111474 A111761 A021798 * A118907 A246206 A200336

Adjacent sequences:  A065223 A065224 A065225 * A065227 A065228 A065229

KEYWORD

easy,nonn

AUTHOR

Floor van Lamoen, Oct 22 2001

STATUS

approved

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Last modified January 29 10:34 EST 2020. Contains 331337 sequences. (Running on oeis4.)