A096158 -id:A096158 - cp's OEIS frontend

A096159 A096158(n) / 2.

0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset: 1

Reinhard Zumkeller, Jun 18 2004

nonn

A096160 Numbers whose proper divisors can be arranged in such a way that all sums of adjacent pairs are primes.

Original entry on oeis.org

4, 6, 8, 10, 12, 22, 30, 34, 58, 82, 118, 142, 202, 214, 274, 298, 358, 382, 394, 454, 478, 538, 562, 622, 694, 838, 862, 922, 1038, 1042, 1138, 1198, 1234, 1282, 1318, 1618, 1642, 1654, 1714, 1762, 2038, 2062, 2098, 2122, 2182, 2302, 2458, 2554, 2578, 2602

Offset: 1

Reinhard Zumkeller, Jun 18 2004

nonn

A096158(a(n)) > 0; subsequence of A096157.

			Proper divisors of 30 are {1,2,3,5,6,10,15}: [3,10,1,6,5,2,15] -> (3+10,10+1,1+6,6+5,5+2,2+15) = (13,11,7,11,7,17): therefore 12 is a term.

More terms from Ryan Propper, Jul 22 2005

cp's OEIS Frontend

A096159 A096158(n) / 2.

Views

Author

Keywords

A096160 Numbers whose proper divisors can be arranged in such a way that all sums of adjacent pairs are primes.

Views

Author

Keywords

Comments

Examples

Extensions