A132012 Records in A051445.

3, 5, 7, 15, 17, 19, 25, 35, 51, 69, 81, 87, 123, 129, 141, 159, 177, 255, 267, 275, 309, 321, 339, 393, 447, 489, 501, 519, 537, 705, 795, 807, 849, 879, 1029, 1245, 1257, 1605, 1671, 1689, 1707, 1761, 1779, 1797, 1851, 1923, 1929, 1941, 1959, 1977, 2505, 2595, 2685

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..4000

Max Alekseyev, PARI/GP Scripts for Miscellaneous Math Problems (invphi.gp).

Formula

a(n) = A051445(A132115(n)). - Amiram Eldar, Nov 05 2024

Prog

(PARI) f(n) = {my(v = invphi(2*n)); if(#v == 0, 0, vecmin(v)); } \\ using Max Alekseyev's invphi.gp
lista(kmax) = {my(fmax = -1, f1); for(k = 1, kmax, f1 = f(k); if(f1 > fmax, fmax = f1; print1(f1, ", "))); } \\ Amiram Eldar, Nov 05 2024

Crossrefs

Cf. A000010, A051445, A132115.

Sequence in context: A002181 A341845 A073692 * A160690 A085494 A348441

Adjacent sequences: A132009 A132010 A132011 * A132013 A132014 A132015

Keyword

nonn

Author

N. J. A. Sloane, Nov 05 2007

Status

approved