A058980 Positive numbers of form 4k such that card(invphi(4*k)=0) (the nontotients congruent to 0 modulo 4).

68, 76, 124, 152, 188, 236, 244, 248, 284, 304, 308, 340, 364, 376, 404, 412, 428, 436, 472, 484, 488, 496, 516, 532, 548, 572, 596, 604, 608, 628, 644, 668, 680, 724, 728, 740, 748, 752, 788, 804, 824, 844, 868, 872, 892, 908, 916, 944, 948, 964, 968, 988

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Prog

(PARI) lista(nn) = {forstep (n=4, nn, 4, if (!istotient(n), print1(n, ", ")); ); } \\ Michel Marcus, May 13 2020

Crossrefs

Intersection of A005277 (nontotients) and A008586 (multiples of 4).

Sequence in context: A269748 A153831 A306113 * A079703 A281235 A097760

Adjacent sequences: A058977 A058978 A058979 * A058981 A058982 A058983

Keyword

nonn

Author

Labos Elemer, Jan 15 2001

Status

approved