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A174374 Derivative Pascal's triangle (version 2) read by rows: smallest prime(n)>C(m,k)=binomial(m,k)=m!/(k!*(m-k)!), 0<=k<=m. 0
1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 3, 4, 3, 1, 1, 4, 5, 5, 4, 1, 1, 4, 7, 9, 7, 4, 1, 1, 5, 9, 12, 12, 9, 5, 1, 1, 5, 10, 17, 20, 17, 10, 5, 1, 1, 5, 12, 24, 31, 31, 24, 12, 5, 1, 1, 5, 15, 31, 47, 55, 47, 31, 15, 5, 1, 1, 6, 17, 39, 67, 90, 90, 67, 39, 17, 6, 1, 1, 6, 19, 48, 95, 139, 158, 139 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..86.

EXAMPLE

Triangle begins:

1

1, 1

1, 2, 1

1, 3, 3, 1

1, 3, 4, 3, 1

1, 4, 5, 5, 4, 1

1, 4, 7, 9, 7, 4, 1

1, 5, 9, 12, 12, 9, 5, 1

1, 5, 10, 17, 20, 17, 10, 5, 1

1, 5, 12, 24, 31, 31, 24, 12, 5, 1

1, 5, 15, 31, 47, 55, 47, 31, 15, 5, 1

1, 6, 17, 39, 67, 90, 90, 67, 39, 17, 6, 1

PROG

(PARI) t(n, k) = primepi(nextprime(binomial(n, k)+1)) \\ Michel Marcus, Apr 13 2013

CROSSREFS

Cf. A007318.

Sequence in context: A160832 A157458 A174447 * A242641 A347187 A027948

Adjacent sequences:  A174371 A174372 A174373 * A174375 A174376 A174377

KEYWORD

nonn,tabl

AUTHOR

Juri-Stepan Gerasimov, Mar 20 2010

STATUS

approved

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Last modified November 27 06:49 EST 2021. Contains 349365 sequences. (Running on oeis4.)