|
| |
|
|
A090009
|
|
Begins the earliest length-n chain of primes such that any term in the chain equals the previous term increased by the sum of its digits.
|
|
0
| | |
|
|
|
OFFSET
| 1,1
|
|
|
EXAMPLE
| 11 begins the earliest chain 11, 13, 17 of three primes such that any term in the chain equals the previous term increased by the sum of its digits, viz., 13 = 11 + 2, 17 = 13 + 4. Hence a(3) = 11.
|
|
|
CROSSREFS
| Sequence in context: A145523 A168413 A153705 * A153706 A201187 A068225
Adjacent sequences: A090006 A090007 A090008 * A090010 A090011 A090012
|
|
|
KEYWORD
| base,more,nonn
|
|
|
AUTHOR
| Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 27 2004
|
| |
|
|
