1,2
a(4) is a term of the type concatenation of r+3, r+2, r+1, r where r = 30k.
Cf. A112363.
Sequence in context: A041180 A027014 A088746 this_sequence A069863 A067642 A052245
Adjacent sequences: A112361 A112362 A112363 this_sequence A112365 A112366 A112367
base,more,nonn,bref
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 07 2005
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