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A066704 Triangle with a(n,k)=C(n,floor[n/k]) with n>=k>=1. 0
1, 1, 2, 1, 3, 3, 1, 6, 4, 4, 1, 10, 5, 5, 5, 1, 20, 15, 6, 6, 6, 1, 35, 21, 7, 7, 7, 7, 1, 70, 28, 28, 8, 8, 8, 8, 1, 126, 84, 36, 9, 9, 9, 9, 9, 1, 252, 120, 45, 45, 10, 10, 10, 10, 10, 1, 462, 165, 55, 55, 11, 11, 11, 11, 11, 11, 1, 924, 495, 220, 66, 66, 12, 12, 12, 12, 12, 12, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..79.

EXAMPLE

Rows start: 1; 1,2; 1,3,3; 1,6,4,4; 1,10,5,5,5; etc.

CROSSREFS

Row sums are A051054. Columns include (most of) A000012, A001405, A051033, A051036, A051052, A051053, A062947 etc. n appears A008619 times in the n-th row. Cf. A060539.

Sequence in context: A153341 A127119 A322265 * A262917 A165007 A284979

Adjacent sequences:  A066701 A066702 A066703 * A066705 A066706 A066707

KEYWORD

nonn,tabl

AUTHOR

Henry Bottomley, Jan 14 2002

STATUS

approved

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Last modified November 20 14:54 EST 2019. Contains 329337 sequences. (Running on oeis4.)