0,2
Cf. A042434.
Sequence in context: A022120 A041191 A041251 * A042591 A098001 A171071
Adjacent sequences: A042432 A042433 A042434 * A042436 A042437 A042438
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).