A029712 PDan numbers: numbers n of the form 3^A * 5^B * 7^C * 11^D with n+-2 and n+-4 prime.

9, 15, 105, 825, 1485, 1875, 3465, 22275, 299475, 14467005, 18907875, 79413075, 570773535255, 943523599095, 6685966546875, 601788708761625, 437753839308976575, 1268708781564712125, 295046164318084716796875

Offset

1,1

Links

Sean A. Irvine, Table of n, a(n) for n = 1..31

Sean A. Irvine, Java program (github)

Crossrefs

Cf. A000040.

Sequence in context: A226927 A152219 A173037 * A136353 A136354 A177184

Adjacent sequences: A029709 A029710 A029711 * A029713 A029714 A029715

Keyword

nonn

Author

Richard C. Schroeppel

Extensions

Offset corrected by Sean A. Irvine, Mar 02 2020

Status

approved