A077621 Squarefree numbers occurring more than once in A076734.

6, 10, 26, 30, 51, 66, 70, 78, 102, 122, 130, 154, 165, 174, 177, 182, 190, 210, 222, 238, 246, 266, 273, 282, 285, 291, 310, 318, 330, 345, 357, 362, 366, 370, 390, 399, 406, 418, 426, 429, 438, 455, 462, 483, 510, 518, 530, 533, 534, 546, 555, 561, 570

Offset: 1

Author

Reinhard Zumkeller, Nov 12 2002

Keywords

• nonn

Comments

Primorials are a subsequence, see A077622.

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A002110, A005117, A076734, A077618, A077619, A077620, A077622.

Formula

A077618(a(n)) > 1.