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A209403 Convolution of primes with odd primes. 2
6, 19, 44, 89, 162, 271, 424, 633, 910, 1275, 1732, 2309, 3018, 3859, 4872, 6057, 7446, 9051, 10888, 12997, 15358, 18011, 20972, 24277, 27950, 31991, 36464, 41325, 46602, 52367, 58612, 65385, 72722, 80651, 89160, 98317, 108070, 118535, 129756, 141713, 154442 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = sum (A000040(k) * A065091(n-k+1): k = 0..n).

PROG

(Haskell)

a209403 n = sum $

   zipWith (*) (reverse $ take n a000040_list) a065091_list

(MAGMA) [&+[NthPrime(k)*NthPrime(n+1-k): k in [1..n-1]]: n in [2..40]]; // Bruno Berselli, Mar 08 2012

CROSSREFS

Cf. A000040, A065091, A014342.

Sequence in context: A138357 A299264 A183763 * A272707 A266938 A299265

Adjacent sequences:  A209400 A209401 A209402 * A209404 A209405 A209406

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 08 2012

STATUS

approved

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Last modified March 31 19:37 EDT 2020. Contains 333151 sequences. (Running on oeis4.)