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A029712
PDan numbers: numbers n of the form 3^A * 5^B * 7^C * 11^D with n+-2 and n+-4 prime.
1
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, Java program (github)
CROSSREFS
Cf. A000040.
Sequence in context: A226927 A152219 A173037 * A136353 A136354 A177184
KEYWORD
nonn
AUTHOR
Richard C. Schroeppel
EXTENSIONS
Offset corrected by Sean A. Irvine, Mar 02 2020
STATUS
approved