1,2
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Cf. A036416.
Sequence in context: A156791 A041081 A041082 * A041357 A041829 A042497
Adjacent sequences: A036414 A036415 A036416 * A036418 A036419 A036420
nonn
Eric Weisstein (eric(AT)weisstein.com)
No others with n<=50000.